Merge "Declare the headers of the ndk_library" am: ee56ce65be

Original change: https://android-review.googlesource.com/c/platform/frameworks/native/+/2212877

Change-Id: I38aa6cfbff7b893a3083cdde0776799dae696756
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>